Lock



R. K. KIND El AL March 6, 1945.

LOCK

Filed Sept. 1:5, 1943 2 Sheets-Sheet l INVENTOR.

March 6, 1945. R. K. KIND ETAL LOCK Filed Sept. 13, 1943 2 Sheets-Sheet2 Patented s, 1945 v UNITED STAT as Rudolf K.Kin'd, New Hyde Park, andRobert H.

Konikofl, Garden Cit 3 Claims.

This invention relates to closures and refers more particularly to locksoperated by magnets.

An object of the present invention is'to employ magnets in theconstruction of locks for the purpose of simplifying and improving suchconstructions. 7

Another object is the provision of a magnetically operated closuredevice which is inexpensive in construction and sturdy and reliable inoperation Other objects of the present invention will become apparent inthe course of the following specification.

In accomplishing the objects of the present invention it was founddesirable to provide two magnets or one magnet and a magnetizable memberwhich are located in the two parts of a closure, for instance, in themovable door and,

the door frame.

According to one of the embodiments of the inventive idea, the bolt of alocking device consists of a magnet and is held by magnetic forces in alocking position. This arrangement may be applied not only to ordinarylocks but to safety looks as well.

The invention will appear more clearly from the following detaileddescription when taken in connection with the accompanying drawingsshowing by way of example preferred embodiments of the inventive idea.

In the drawings:

Figure 1 is a section through a safety lock provided with magnetictumblers.

Figure 2 is similar to Figure 1 and shows the lock when it is opened bya key.

Figure 3 is a transverse section along the line 3-3 of Figure 1.

Figure 4 is a section along the line 4-4 of Figure 2.

Figure 5 is a section through asafety lock of a somewhat differentconstruction.

Figure 6 is a transverse section through a lock shown in Figure 5.

Figure 7 is similar to Figure 6 and shows the look after it has beenopened.

Figure '8 is a perspective view illustrating magnetic closure means fordoors.

The safety look shown in Figures 1 to 4 includes a frame 9 which isfirmly connected to its support and which may be provided with an outercylindrical envelope ID.

The frame 9 carries 'a revolving plug 11. The plug and the frame areprovided with cylindrical passages It. The corresponding passages in theplug H and the frame 8 are in alinem'ent with 1 P k. N. In: laidKemkofl' assignor to said'Kind Applicatlon septeniber13,19i3,berlalNo;502,126

each other and extend across the e'ntlre'frame. The number of thesepassages, H which are located one next .to the other alongthe frame maybe varied at will.

The passages l2 contain cylindrically shaped drivers [3,. as well astumblers H. In accordance with thepresent invention the drivers I3 andthe tumblers l4 constitute magnets which are attracted by each other. Asshown in Figure 1 10 the forces of a magnetic attraction suffice tomaintraction maintain the drivers IS in contact with the tumblers l4.

The size of the tumblers l4 and of the drivers '13 is so selected thatone of these elements extends between the plug and the frame in thenormal position of the tumblers in each ofthe passages l2. Thus thetumblers l4 and/or the drivers 13 serveas bolts extending between theplug and the frame and preventing the rotation of the plug. Thisrotation is utilized for the opening of the look by the usual meansIlwhich are not further illustrated.

The key l6 which is shown in Figure 2 has two opposed edges II and I9which engage the tumblers located opposite each other. The tumblers IIare provided with rounded ends so as to facilitate the insertion of thekey. The key 16 may be made of steel or any other suitable materialwhich will not interferewith the magnetic forces of attraction of thetumblers.

As shown in Figure 2 the edges l8 and is of As shown in Figure 4 .theuser may then turn the key I 6 and thereby rotate the plug; I l. Thetumblers M will remain within the .plug while the drivers I} will belocated in the passages [of the frames.

When the the magnetic forces wili cause the tumblers I4 and the drivers[3 to return to thegoriginal positions shown in Figures 1 and 3.

The safety lock shown'in Figures, 5 to 7 comprises a frame 20 whichcontains an eccentrically located plug 2|. The plug 21 ls-Provided witha key-hole 22 and contains a magnetizable body 23 plug H is returnedtheipositio'n' shown invFigure 3 and thekey IQ is withdrawn,

which is used to attract the magnetic tumblers l4 and drivers l3.

The magnetizable body 23 rotates along with the plug 2| and is engagedby the ends of the tumblers H when the lock is in its closed position.In this construction the passages 24 which are formed in the frame 20and the plug 2| are cated only upon one side of the key-hole 22 whilethe other side of the key-hole is occupied by the magnetizable member23.

This lock may be operated by a key 25 provided with a single operativeedge 26 and made of steel or other material which does not interferewith the magnetic forces.

In the position shown in Figure 6 the tumblers l4 engage themagnetizable member 23 and some of these tumblers l4 and/or some of thedrivers I3 serve as bolts extending between the plug 2| and the frame 20and preventing the rotation of the plug 2|.

The surface 26 of the key 25 is so formed in relation to the size of thetumblers l4 and the width of the plug 2| that when the key 25 is fullyinserted into the key-hole 22, the contacting surfaces between thetumblers I4 and the drivers I3 will be in alinement with the outersurfaces of the plug 2 I Then the user may turn the key 25 and rotatethe plug 2| thereby opening the lock. As shown in Figure 7 the tumblersM will then be located within the plug 2|, while the drivers I3 willremain in the passages 24 of the frame 23.

The parts resume the position shown in Figure 6 as soon as the key iswithdrawn.

Figure 8 illustrates a closure device including a magnet 21 which isembedded in the door 28.-

Although the magnet 21 is shown as being of horse-shoe form, it may beof any other suitable shape or may consist of an el-ectro magnet.Whenever the door 28 i closed the magnet 21 will be located close to amagnetizable member 29 which is carried by the door frame 30. Thisattraction between the magnet 2'! and the magnetizable body 29 willsuflice to hold the door 28 in its locking position and to prevent itfrom rattling or being opened unintentionally.

The door 28 carries a lock 3| which may be of the usual construction andwhich is provided with a bolt 32. The bolt 32 is adapted to be insertedinto a recess formed in the bolt receiving member 33 which may be ofstandard construction and which is located within the door frame 30.

In accordance with the present invention the bolt 32 may consist of amagnet while the bolt receiving member 33 i made of a magnetizabl-ematerial.

This construction has the advantage that whenever the bolt 32 isextended into the bolt receiving member 33, the forces of magneticattraction between these elements will hold the door 28 firmly in placeand will prevent the rattling of the door. These forces of magneticattraction may be operable whenever the door 28 is closed and eventhough the door is not locked so that the bolt 32 is located within thelock 3|. In that case the magnetic bolt 32 fulfills the same purpose asthe magnet 21, thus making it possible to achieve the same resultswithout the use of the members 21 and 29.

It is apparent that the exampl s shown above have been given by way ofillustr tion and not by way of limitation and that the illustrationsshown above are subject to wide variations and modifications withoutdeparting from the .scope or intent of the present invention. All ofsuch variations and modifications are to be included within the scope ofthe present invention.

What is claimed is:

1. In a safety lock, in combination, a frame of non magnetic material, arevolving plug of non magnetic material located in said frame, passagesformed in said plug and frame, said passage extending on opposite sidesof said plug, the passages in the plug and frame being in alinement whenthe plug is in its locking position, and tumblers and followers in saidpassages, said tumblers and followers consisting of magnetising andmagnetisable materials, said tumblers attracting one another whereby thetumblers are maintained across said plug and frame in a lockingposition, said followers being pushed aside and into said frame by thecorrect key to free said plug for rotation.

2. In a safety lock, in combination, a frame of non magnetic material, arevolving plug of non magnetic material located in said frame, passagesformed in said plug and frame and extending in alignment with each otherwhen the plug is in its locking position, tumblers and followers in saidpassages, and a keyway plug totally enclosed in said revolving plug, aidtumblers, followers and keyway plug consisting of magnetising andmagnetisable materials, and attracting one another, whereby saidfollowers are maintained across said revolving plug and frame in alocking position, said followers being pushed into said frame by thecorrect key to free said revolving plug for rotation.

3. In a safety lock, in combination, a frame of non magnetic material, arevolving plug of non magnetic material located in said frame, passagesformed in said plug and frame and extending in alignment with each otherwhen the plug is in its locking position, tumblers and followers in saidpassages, and a keyway plug totally enclosed in said revolving plug,said keyway plug being formed to provide a keyway and also to provideseats for those portions of the end of the tumblers extending beyond thewidth of the keyway, said tumblers, followers and keyway plug consistingof magnetising and magnetisable materials, and attracting one another,whereby said followers are maintained across said revolving plug andframe in a locking position, said follower being pushed into said frameby the correct key to free said revolving plug for rotation.

RUDOLF K. KIND. ROBERT H. KONIKOFF.

